Plane



PLANE.

I (No Model.) A. DOLL.

No. 334,943. Patented Jan. 26, 1886.

NITE

AUGUST DOLL, OF LENA, ILLINOIS.

PLANE.

HEECIFICATION forming part of Letters Patent No. 334,943, dated January26,1886.

Application filed November 11, 1885. Serial No. 182,435. (No model.)

To aZZ whom it may concern:

Be it known that I, AUGUsT DOLL, a citizen of the United States,residing at Lena, in the county of Stephenson and State of Illinois,have invented certain new and useful Improvements in Planes, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

My invention relates to improvements in planes, and is designed toproduce a device for adjusting and removing the bit, that shall bereadily attachable to the body of an ordinary plane.

In the drawings, Figure 1 represents a longitudinal section of a portionof a plane-body with the improved device attached thereto; Fig. 2,detail views of the wedge-operating 1ever; Fig. 3, a detail showing thebed-block for the bit-operating screw; Fig. 4, details of thebit-operating screws, and Fig. 5 a modified form of connection betweenthe wedge and its operating-lever.

The plane-body A has a recess, B, for the bit 0 and a portion of themechanism.

The bed-plate D of the bit-adjusting mechanism is a frame consisting ofa plate with triangular end wings, and rests on the body to the rear ofthe bit 0, and is secured to said body by screws or otherwise. Thisbed-piece D has a central threaded passage for the screw E, which isprovided with a head with an annular recess or groove, F, Fig. 4:. Inthis groove engages an arm of an L-casting,G, the other arm of whichcarries a screw-rod, H, passing through the bit 0 near the top thereof,and clamped to the same by a thumb-nut, I. The casting G being securedto the bit and to the screw E, when the latter is turned, it mustnecessarily carry the said bit up or down, and thus presents an easymeans of adjust ment for the same. By boringahole through the said bitand screwing the bed-piece in place, the attachment is secured to anyplane, and in working order.

Extending across the recess B, just in front of the wedge K, is thefulcrum or pivot-rod L of the lever M, which is provided at its upperend with an extension, N, carrying a thumb-screw, 0, bearing normally onthe top of the said wedge K. Just below the position of the rod L, thewedge is provided with a series of notches, P, or a single notch, asshown in Fig. 5. In these notches is adapted to engage a spur or tongue,R, forming the shorter arm of the lever M. The space between the rod Land the bit 0 being constant, as the wedge K is forced between them bythe screw 0, the said wedge must act to clamp the said bit in place. Byloosening the screw 0 and throwing the lever M forward, the spur R willcatch in the notches or notch P and move the wedge K upward, thusreleasing the bit from pressure and allowing its adjustment, as stated.

In order to prevent wear, the notches are cut in a plate set in thewedge; or the lower edge of a plate is used, as in Fig. 5..-

I claim 1. In a plane, a wedge provided with one or more notches, alever fulcrumed in front of said wedge, and provided with a spur ortongue for engaging said notches, and an adjusting-screw normallyengaging the top of said wedge, and seated in the upper end of saidlever, substantially as specified.

2. In a plane, an adjusting device consisting of a'clamp-piece securedto the bit, and a screw having a seat secured to the body of the saidplane and engaging said clamp-piece, combined with a bit-clamping deviceconsisting of a wedge with a notch or notches on it, a lever fulcrumedin front of saidwedge and having a spur or tongue engaging said notches,and an adjusting-screw seated in the top of said lever, and engagingwith the upper end of said wedge substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

AUGUST DOLL.

Witnesses:

WILLIAM W. DAWS, JARED O. HURD.

